Calculate Your Body Mass Index
Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.
- Enter your weight and height
- Select "Compute BMI" and your BMI will appear below.
Underweight = BMI of <18.5
Normal weight = BMI of 18.5–24.9
Overweight = BMI of 25–29.9
Obesity = BMI of 30 or greater
Limitations of the BMI
Although BMI can be used for most men and women, it does have some limits:
- It may overestimate body fat in athletes and others who have a muscular build.
- It may underestimate body fat in older persons and others who have lost muscle.